I have added a GPU but the project doesn't use it
From BOINC Wiki
When you add a GPU, you need some requirements for a BOINC project to use it:
- Drivers from the GPU manufacturer.
- A BOINC project capable of using this GPU.
- Telling the project that it's all right to use the GPU.
- Telling BOINC it's all right to use the GPU.
- Not install BOINC as a service, as this disables the GPU.